page_title: Bristol Siddeley Orpheus
section_title: Specifications (Orpheus  BOr.3 / Mk.803)
hierarchical_section_title: Bristol Siddeley Orpheus / Specifications (Orpheus  BOr.3 / Mk.803)
caption_attribution_description: Bristol-Siddeley Orpheus engine of Fiat G.91 at Istituto Tecnico Industriale Aeronautico "Malignani", Udine (Italy)
context_page_description: The Bristol Siddeley Orpheus was a single-spool turbojet developed by Bristol Siddeley for various light fighter/trainer applications such as the Folland Gnat and the Fiat G.91. Later, the Orpheus formed the core of the first Bristol Pegasus vectored thrust turbofan used in the Harrier Jump Jet family.
caption: Bristol Orpheus as fitted to the Fiat G91
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